Here is how I changed the belt on my Hoover. I have a 6-8 year old Hoover Dimension Limited with model # U5215-930.
1. Realize I don't know where my manual is (which would tell me how to do this without having to look it up). Remind myself to get around to keeping all appliance manuals organized, put reminder on "to do" list.
2. Go to Hoover website, click link for product manuals on main page to go to manual lookup page. Input model number of vac from tag on bottom, get nothing. Input model name, get nothing. Verify I am spelling correctly, still doesn't work. Get angry at stupid Hoover for not building a proper website database, put "send Hoover letter of complaint" on "to procrastinate" list.
3. Google it, find this site and Chris' instructions above, be thankful people like Chris are around.
4. Go to vacuum. Bring screwdriver. Bring piece of newspaper on which to set all screws and parts I remove, so I keep organized and don't lose anything.
5. Lift off sliding button that controls vacuum carpet height settings (it's just held on by friction). Disconnect cleaning tools hose. Removing both these helps the top lift off in step 8.
6. Flip over. Use screwdriver to pry off plastic beater bar cover. Easy, as the cover has instructions for same on it.
7. Beater bar easily slides out, since the belt was the only thing that was holding it in, and that is broken. Note notches in ends of beater bar, and slots they slide into, so I know how to put it back.
8. Use screwdriver to pry off top cover. The tabs holding the top cover aren't clearly marked, but prying at the sides of the cover (left and right sides, not back or front sides) will pop the cover off the tabs pretty easily and allow it to come off.
8. Remove spare belt from holding pins on the back of the vacuum. Slip belt around the beater bar, then slip the beater bar back into the chassis while pushing the belt through its appropriate slot.
9. Use screwdriver as pry bar to pull belt far enough to slip it around the motor drive shaft. Align belt properly on shaft.
10. Pop top cover back onto tabs that hold it in place, then do same with beater bar cover. Replace carpet height slider switch, reconnect cleaning tools hose.
11. Vacuum carpet to test that the vacuum works properly.
12. Call wife, who happens to be shopping at store while I am repairing vacuum. Give her vacuum info so she can buy a spare belt while she is at the store, so next time this happens I won't be without.
It probably took me longer to write this than to repair the vacuum. I hope this helps you.
kmaloy
--------------
grovebungalow.blogspot.com
kmaloy, November 2009